why we generally use 3.5 core cable or in other word 1/2
core for neutral and also confirm me that in balance
conditiob(3 phase)current in neutral will zero
- 7 Answers
- 29906 Views
- HCIL, Jindal, Siemens, I also Faced
- E-Mail Answers
Answer Posted / raju chetiar
Normally Neutral conductor is 1/2 the size of other
conductor.It is theoraticaly expalin that In a three phase
circuit ( Equal load in all three phasse) there will be
Zero current in Neutral, Ex. 3phase indusction load (Motor)
(NO NEUTRAL CONNECTED T OANY MOTORS AS THE RESISTANCE OF
THE THREE WINDINGS ARE EQAL).
But in a three phase to single phase distribution
(Resistive loads) it is not possible to maintain the equal
load in all three phases hence the unbalance current has to
be taken away from the circuit for the healthy opertion of
the equipmetns.
Thearitically and also practically it is prooved that the
flow of unbalance current in the 3 phase resistive load
distribution is always less than 1/2 of the phase current.
So 1/2 caore has been taken as a neutral
| Is This Answer Correct ? | 10 Yes | 5 No |
Post New Answer View All Answers
Can we Co-ordinate relay in Load Break switch?
Scott connection is used for A 3-phase to 2-phase conversion B to achieve higher effciency C to save copper D to reduce harmonics
If mutual flux is 1.2wb & power factor is 0.8 lag , then what is the Useful flux of a transformer?
1.What is captive power plant? 2.What is national grid?Give brief idea.
What is the abbreviation of NGT panel
what is the most permissible winding temp when we conducting a generator load test?(condition no load)
why zero sequence impedance measurement is not applicable for single phase GT
What is open delta Xformer? It's adavntages & Use?
what is V.L.F. testing of power cable? do you know the voltage ratings, like for what rating and size of cable what rating of V.L.F. testing is used?
Atwhat condition reverse power relay will act?
Why Water motor is not taking a load or pressure while everything is correct. (Note: Motor running properly)
what is the profesional board for electrical engineer what is thepast and during construction for electrical engineering
various transmission tower like .,D tower ,K.C.O tower ,C.C.O tower,K.C.R tower ,C.C.R tower ,H.C.O tower in different tons.
Why are the laminations insulated from each other?
What are the basic properties of signal flow graph?
